math 2: polar coordinates Flashcards
1
Q
regular rectangular coordinates of P are
A
(x, y)
2
Q
the polar coordinates of P are
A
(r, θ)
3
Q
if r > 0, it’s measured aong the ray of the
A
terminal side of θ
4
Q
if r
A
opposite ray
5
Q
x =
A
rcosθ
6
Q
y =
A
rsinθ
7
Q
r²=
A
x² + y²
8
Q
unlike the case involving rectangular coordinates, each point in the plane can be named by an …. of polar coordinates
A
infinite number
9
Q
in general, a point in the plane represented by (r, θ) can also be represented by … or … where n is an integer
A
(r, θ + 2πn); (-r, θ + (2n - 1)π)
